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After undertaking what I believe was a Windows 7 Update, when I tried to login to my computer this morning I got this message "The User Profile Service service failed the logon. User profile cannot be loaded."

So after searching for solutions (using a different PC) I found that Microsoft recommended that I load the computer in Safe Mode and follow some instructions to fix the problem.

However when I tried to enter Safe Mode I get a pop-up message from 'Cyberlink PowerRecover' which states "Driver Initialization failed. Please reinstall the application."

I read through the instructions you posted on that link, and it was more or less exactly the same as the solution I stumbled across myself!

I managed to get the computer working again later that day by booting up the PC with the recovery disk inserted.

I didn't want to wipe out the files on my computer, so after loading the recovery disk I just clicked cancel (i.e. without choosing any of the options available) because I wasn't sure what I was doing...however when I then restarted the PC for some reason it now allowed me to load up successfully in Safe Mode!

I followed the instructions from Microsoft on how to modify the registry to solve the 'User Profile' problem, restarted the PC and now everything is working fine.

My only concern now is that windows still wants to do an update. The 'Shut Down' button on the start menu has an update icon alongside it, which means that if I shut down the computer it will automatically install the update. I'm worried this will be the same update that caused all the problems in the first place?!

Is there a way of cancelling this update? (I haven't shut down my computer since Friday just in case!!)